3138668 has 18 divisors (see below), whose sum is σ = 5948964. Its totient is φ = 1448304.

The previous prime is 3138661. The next prime is 3138671. The reversal of 3138668 is 8668313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3138661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1646 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (330498).

Almost surely, 2^3138668 is an apocalyptic number.

It is an amenable number.

3138668 is a deficient number, since it is larger than the sum of its proper divisors (2810296).

3138668 is a wasteful number, since it uses less digits than its factorization.

3138668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673 (or 4658 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 3138668 is about 1771.6286292561. The cubic root of 3138668 is about 146.4137261061.

The spelling of 3138668 in words is "three million, one hundred thirty-eight thousand, six hundred sixty-eight".